Sod-cutter and pu lverizing-harrow



3 Sheets-Sheet l.

A. MADSON.

s01) CUTTER AND PULVBRIZING HARROW.

(No Model.)

116. 396,166. Patented Jan. 16, 1889.

WIT/M8858:

Afro/mm.

(No Model.) 3 Sheets-Sheet, 2.

MADSONE 7 s01) CUTTER AND PULVERIZING HARROW. No. 396,166. Patented Jan.15, 1889.

:fi E *6 $1 3 i a M "h WITNESSES: INVENTOR:

M ATTORNEYS.

N. PETERS Photb-Liflwgrapher. Wauhingion. DC,

3 SheetsSheet s.

(No Model.)

A. MADSON.

s01) OUTTER AND PULVERIZING HARROW.

No. 396,166. Patented Jan. 15,1889.

WITNESSES:

A TTOIM/EYS.

N PUERS. Phmwulbo n im. Wnhingwn. 0.0,

UNITED STATES PATENT OFFICE.

ABRAHAM MADSON, OF FRENCHVILLE, IYISCONSIN.

SOD-CUTTER AND PU LVERIZING-HARROW.

SPECIFICATION forming part of Letters Patent No. 396,166, dated January15, 1889.

Application filed June 20, 1888.

To all whom it may concern.-

Be it known that I, ABRAHAM MADsoN, of Frenchville, in the county ofTrempealeau and State of \Visconsin, have invented anew and ImprovedSod-Cutter and Pnlverizing- Harrow, of which the followingis a full,clear, and exact description.

My invention relates to an improvement in sod-cutters andpulverizing-harrows, and has for its object'to provide a simple,durable, and conveniently-operated apparatus wherein the sod or groundwill be effectivel y broken in small particles, and also wherein thecutters may be regulated to any desired depth, and, further, wherein theapparatus may be carried from field to field without the cutterstouching the ground.

The invention consists in the construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures. I

Figure 1 is a plan. view of the apparatus. Fig. 2 is a side elevation.Fig. 3 is a longitudinal vertical section on line :0 a of Fig. 1. Fig.4: is a transverse section on line y y of Fig. 1. Fig. 5 is atransversesection through one 'of the cutter-shafts. Fig. 6 a partial transversesection through the elevating device, and Fig. 7 is a detail sectionalview on the line .2 z in Fig. I.

In carrying out the invention a preferably rectangular frame, A, isemployed,constructed in any approved manner, usually consisting ofparallel side and end pieces, as best shown in Fig. 1, the front andrear end pieces being usually connected'by a central platform, A, uponwhich at the rear the seat A' is mounted.

Suitable hangers, a, are attached to the under face of the frame sidepieces, the number whereof upon each side pieceis made to correspond tothe number of cutter-shafts employed, and the said hangers upon therespective side pieces of the frame are so placed as that they will bein transverse alignment.

In the several aligning hangers a transverse shafts B are journaled,which shafts are p0- lygonal a greater portion of their length, hav

ing their extremities reduced to enter the hangers, and the saidextremities of the shafts are threaded and provided with a nut, b,adapted to enter a recess, 1), produced in the outer face of thehangers.

A series of cutters, D, are fixedly held at intervals upon the shaft B,which cutters preferably consist of two knives, (l, curved in directionof their longitudinal axis, provided with a central polygonal slot, anda circular cutting-surface, (1, upon opposite sides at each end, theextremities being made to terminate in a point. Each set of cuttersconsists of two knives mounted upon the polygonal section of theshaftsin such a manner that one knife will be at right angles to theother, forming a cross. If in practice it is deemed desirable, thecutters,instead of consisting of two pieces, may be constructed of onepiece. In every event,however, the several points of the cutters inclinein the same direction.

In placing the cutters upon the shafts a sleeve, E, is lixed in anyapproved manner at one extremity of the polygonal section and the firstcutter is slid upon the shaft to an engagement with said sleeve. Theother cutters are then placed upon the shaft and spaced by interveningloosely-mounted sleeves E, and so manipulattal before being secured asthat. the blades of each alternate cutter will be essentially inalignment with the center of the space intervening the opposing edges ofthe cutter-blades to the rear and in advance, as best shown in Figs. 3,4, and 5.

The several cutters are usually held in position by aninteriOrly-threaded sleeve, e, or nut, screwed upon a threaded surface,I)", of the shafts B to an engagement with the outer central surface ofthe last cutter, the said threaded surface of the shaft approximatingthe end opposite to that upon which the first sleeve, E, is secured. Idesire it, however, distinctly understood that the fixed sleeve may beomitted and a threaded sleeve be employed at each extremity of the shaftinstead without departing from the spirit of the invention.

The several shafts carrying the cutters are so journaled that the curvedsurface of the blades mounted upon one shaft will be con tiguous to thesurface of the equivalentblade upon the next shaft, as best illustratedin Fig. 1. By this means the entire surface traversed by the apparatusis pulverized, as the cutter-blades of one shat't intervene the cutter-ljilades of the next shaft.

A lever, II, is pivoted centrally to each side bar of the frame, on thelower end of which bars the drive-wheels 71 ot' the apparatus arestudded, the upper ends of the said levers being made to projectdiagonally upward parallel with the outerfaceot brackets H, attached tothe upper surface of said side bars at about the'center of the same.

In the brackets H a rock-shaft, K, is journaled, provided with aforwardly inclined arm, 7.1, near each end, which arms are pivot:- allyunited with the upper extremities of the levers by a connecting rod orlink, 7;, as best shown in Figs. 2 and A standard, H, is secured uponthe center of the upper surface of the shaft K, and upon the lower frontface of the said standard two levers, m and 'm,are centrally pivotedbyone pivot-pin, the normalposition of which levers is illustrated inFigs. r and ti, being diagonally one over the other. The upper ends ofthe levers m and m a reconnected with opposite sides of a spring-amnatcdhand-lever, M, flllPl'lllllPtl in the standard near the top, the lowerends of the said levers) and m being respectively attached to horizontalrods N and N, adapted to reciprocate in suitable bearings upon therocleshaft K.

The several rods N and N are pnrposcd to extend thrmigh an aperture, 0,in the arms of the rock-shaft, and also through one of a se ries ofapertures, 0, produced in the brackets around the lnearings of therock-shaft. The rods are normally held projected through i the aperturesaforesaid by the action of a spring, S, as best illustratietjl in Figs.4 and (3.

It will be observed that when the hand-lever M is pressed by the driverthe rods N and N are drawn inward out of engagement with the brackets.\Vhen thisis act-.oinplished, the shaft K may be revolved until the body.is elevated or depressed the desired distance,

the wheels serving as a fulcrum.

The shat't i which is hinged to the .l'orward l end of the frame, isprovided with a casterwheel, F, adjustably secured thereto. The sidewheels, h, and the elevating mechanism may be omitted, if desired.

Ilavingthus described my invention, I claim as new and desire to secureby Letters Patent 1. In a sod cutter and pulverizer, the combination,with a shatt, ot' a series of cutters, I), arranged upon the shaft, eachcutter consisting of two knives, d, curved in the direction of theirlongitudinal axis and having circular cutting-edges d, and each cutterbeing spaced and arranged with its blades in alignment with the spacebetween the blades of the adjacent cutter, substaiitially asherein shownand described.

In a sod cutter and pulverizer, the combination, with the recessedhangers a and the shaft 13, having screw-t]n-eaded ends, ot' the cuttersI), mounted on the said shaft, the sleeves E E, and the nuts I) l;e,snbsta1h tially as herein shown and described.

1:3. In a sod taitter and pulverizer, the combination, with thesupporting-t'rame, ol the pivoted levers ll, the wheels 71, carriedonthe lower ends of the said levers, the rock-shaft K, provided with thearms 7;, the links connecting the arms 7r. to the leversl'l, and meansfor locking the rock-shattin position, substantially as herein shown anddescribed.

4. In a sod cutter and pulverizer, the combination, with thesupporting-frame and ap ertured brackets carried therel'iy, of thepivoted levers H, the wheels 7L, carried by the said levers, therock-shaft K, provided with the apertured arms 7a and standard M, thelinks 1", connecting the arms 7a and levers H, the levers m in, pivotedto the standard M, the hand-lever M, connected to the said. 1evers m. m,and the sliding and spring-actuated rods N N, for engaging the aperturesot' the l'irackets and arms 7t, substantially as herein shown andtlleseriliied.

ABRAHAM MADISON.

Witnesses:

,llALVOR tunicrarn, JUHN A. MAnsoN.

